Oil-furnace for



G. C. ADAMS.

OIL FURNACE FUR BOILERS.

APPLICATION mio MAY 22. |920.

Patented June 21, 1921.

/NVEN T09 6. TAM-5 FIG .5

UNITED STATES PATENT OFFICE.

GEORGE C. ADAMS, OF SAN FRANCISCO, CALIFORNIA.

OIL-FURNACE FOR BOILERS.

Application led May 22,

[o aU whom 'it may Concern.'

Be it known that 1, tinouon C. ADAMS, a citizen of the United btutes, residino at San Francisco, in the county o dan lrancisro and State of California, have invented new and useful Improvements in Oil-Furnaces for Boilers, of which the following iS a specilication.

This invention relates to improvements in furnace construction for oil burning boiler furnaces and the primary object of the invention is to provide i`or better combustion and greater heat at a relativel) low fuel consumption; to provide a steady iame whether large or small; to eliminate smoke and noise: and to permit of an effective control of the flame at all times.

The invention possesses other advantages and features, some of which, with the foregoing, will be set forth at length in the following description wherein I shall outline in full that form of the invention which I have selected for illustration in thc drawings accompanying and forming a part of the present specification. Tn said drawings` T have shown one form of the construction of mv invention, but it is to be understood that I do not limit myself to such form, since the invention as expressed in the claims may bc embodied in a plurality of forms.

Referring to the drawings:

Figure 1 is a fragmentarv lonstitudinal sectional view of the furnace Hoor of mv invention.

Fig. 2 is a ton plan view of the furnace floor shown in Fig. 1.

Fig. 3 is a fragmentary longitudinal sectional view ot' the furnace of mv invention. on a reduced scale. and showingl nart of a horizontal boiler.

Tn carrvinrr out mv invention. T construct and arrange the Hoor me the furnace so that it inclines rlownvvardl)7 from a noint beneath the furnace toward the mediate nortion thereof. in steps or stages. and at certain points in this inclined door. T nrovide unwardlv divero'ino relativelv larve air inlet oneninQS. The flame is directed lonfritudinallv from the burner over the inclined Hoor and in nart diroctsdownwardlv and a short distance forwardlv over the first sten or stage of the inclined Hoor nnrl then misses 'horizontallv forwardlv over the second starre of the inclined Surface, Tt is nreforahlv i this second stage that the diverfrinn onenings are formed and air enteringr the furnace Specification of Letters Patent.

Patented J une 21, 1921.

1920. Serial No. 383,350.

irom below the l'loor through said openings ouirlil",v expands duc to the upward divergence o the openings. .d v this expansion any1 rnc ruige openings provided, the large volume oi' air admitted is more readily heated nue to its havin expanded und as the thune docs not pass clos.: to the air openings but lmrizontallyv above them, the air is given mmc time in which to expand and heut and to mir; with the incl gases burning in the J{nr-nece. Vln this way i am permitted to introduce und consume a larger volume of air than is the case with tl ordinary oil furna'c. without smothoring thc air ports and as a result consummate i saving" in fuel and provide an eficctive and even greater heat.

ln the ordinary oil burning furnace for boilers, tbc (lomo passes dir-eetl),Y over and close to small. straight. or parallel sided air openings in u fiat furnace floor and the flame tends to smother the ports or openings with the result that not enoufrh cir is admitted to propcrlv snnoort combustion. Furnaces of this tvp@ are difiicult to manege under a small Home and when overloaded smokc and melrc an objectionable noise. The flame in either instonc:3 is nnstoadv. With mv improved i'urnacn nonstruction such as described. these obicctions .are eliminated and Vless incl need hc consumed to nrovirle heat couil to or cvcn creator than said nrimfurnaces. i

ther Features oir' novel construction of rnv furnace aid in rcmovin." the ohiections and ocnorollv imnrovino oil Vurnor furnocog fmhoilers ond will he hereinafter described in detail..

Tn the present omlworlimopt nl tlmy invpn- HOY". 'Fivnnon Il ig @prior-gli" of ilf (Walinarv time hovino' doors .5 with whill the air admittnfl +o the turnfme is .reoulatorl and lifvinf' an oil hurner fi nroiecting horizontoll infn tho Fiirnnp flwwnnofli tlm flnnv 9nd '7 o* the furnace. above sairl floors.

The, Hom' R nl tlm furnace. qenerallv soeolrino. is raised it the front ond of the turno/c to nrnvide an oir chamber 9 und the portion thereof under and in line with the burner is inclined downwordlv toward the conter of the icuruace at which point a combustion rit 10 is formed. From the upper side of this pit.` the floor is slightly upwardlv inclined toward the rear of the furnace. This floor arrangement permits the gases to expand slowlv and in this way reduces the noise. This pit 10 has the eifect of giving the fuel gases a twist in permitting expansion thereof, with the result that the is thoroughly mixed with the gases and a thorough combustion follows; also, this retards the movement of the flame Y and provides an intense heat throughout the nace. feet wide a, d terminates forwardly, for exaniple a little over a foot, say, one foot six inches in front of the burner. At a point on either side of this portion 11 rearwardly of, and below, the inclined surface, there are )rovided large air ports 13 communicatinc Y sa i D with the air chamber 9. .ln front of these openings'on opposite sides of the portion l1 are two or more rows of fire brielr i3 'over which air passes from the openings 1.3. @n top of the step or portion 1l on eacli side of the burner are baffle members lll which diverge forwardly and are preferably formed of fire brielr. entering 'through the ports or openings 13 passes between and behind these baffles into the furnace and around the sides and in front of said baffles. rlhese baflies become heated and heat the air passing around and between them. By being diverged the flame and fuel gases expand between the baffles and are prevented by the baffles from being smothered by too great an inrush of air from behind the burner. This will permit of the firing of a small flame, which flame will be clear7 intense and steady.

The second step 15 of the inclined floor isof substantially the same width and length as the first stage but these proportions may be varied as desired. The stage begins from a point preferably one-half inch below the lower end of the first stage and preferably comprises rows of fire briclr 16, in one layer, which bricls are spaced in transverse rows to provide plurality of transverse air intalre openings i7 in said sta The sides of the bricks of each row are beveled so as to provide upwardly enlarging or diverging openings. rllhe bricks are suitably supported, preferably by pipes 18 and this stage of the floor is inclined downwardly and forwardly, but not to the extent of inclination of the first stage. The floor on the side of this stage is closed and solidly formed as in the ordinary furace. Rows of fire brick 19 are placed on the sides of the stage 15 and extend horizontallyras walls above the top surfaceof the openings 17 to concentrate corinne the air to the area above the opening 1 l -.7 and under flame.

The third stage 20 is not inclined but level and disposed about six inches below the lower end of the second stage with for is directed forwardly substantially horizontally. The draft thus created causes air to be drawn into the furnace through the openings i3 and the air passes between the bafles ll and around said balllcs over the fire brick 15% into the furnace. By arrangement of the baffles lfl, and ports 13 relative to the burner the air is divided, allowed to expand and is heated whereby it will readily support combustion of the fuel. As the air enters through the converging openings 17 in the second l5, it expands and is read ily heated, the si 'ce between the openings and the flame owing` to the inclination of this stage permitting the air to enter the flame and to mix vwith the combustible gases more readily as previously described. i

The next stage 2O is being below the other stage permits the llames to expand slowly. The pit 10 causes scatterecL combustible particles to be swirled therein and gives a twist to the flame, whereby thorough combustion is provided. i

1. An oil burning furnace including a burner, a floor having a downwardly inclined surface below the burner and extending in front of the burner, and another downwardly inclined surface extending from the first surface, said latter surface having a plurality of upwardly opening air intake openings therein.

2. An oil burning furnace including a burner, a `floor having a downwardly inel ined surface below the burner and extending in front of the burner and another downwardly inclined surface extending from the first surface, said latter surface having plurality of upwardly opening air intake openings therein, said opening having upwardly diverging sides.

,An eil burning furnace includingv a burner, a floor having a downwardly inclined surface below the burner and extending in front of the burner, and another downwardly inclinedA surface extending from the firsty surface, said latter surface having a plurality of upwardly opening air intake openings therein, said opening having upwardly diverging sides, and a come bustion pit in said floor beyond and below the level of the second inclined surface.

l. An oil burning furnace comprising an end wall, a floor extending forwardly from a point above the lower side of the end wall and being inclined downwardly toward a mediate point. of the floor,- theire being an air chamber below the inclined part of the floor, said floor having air intake openings in the inclined portion thereof, and a burner disposed above and in line with the inclined portions, said air openings being diverged upwardly.

5. An oil burning furnace comprisin an end wall, a floor eXtendinO forwardly from a point above the lower si e of the end wall and being inclined downwardly toward a mediate point of the floor, there being an air chamber below the inclined part of the floor, said floor having air intake openings in the inclined portion thereof and a burner disposed above and in line with the inclined portions, said air openings being diverged upwardly, said burner being arranged to direct flames substantially horizontally above the inclined surface having the openings therein.

6. An oil burning furnace including an end wall, a burner in said end wall, a floor for the furnace having a part thereof located close to, and beneath, the burner, said part being inclined downwardly and forwardly, a second inclined ortion extending forwardly and downwar ly from a point below the first inclined part, said wall having openings therein below the inclined ports of the floor, and said last-named inclined part having air intake ports therein.

7. An oil burning furnace including an end wall, a burner in said end wall, a floor for the furnace having a part thereof located close to and beneath the burner, said part being inclined downwardly and forwardly, a second inclined portion extending forwardly and downwardly from a point below the first inclined part, said wall having openings therein below the inclined parts of the floor, and said last-named inclined parts having air intake parts therein, forwardly diverging deflectors mounted on opposite sides of the burner, said floor having air intake openings therein behind said deflectors.

8. An oil burning furnace including an end wall, a burner carried by said wall, and a furnace floor extending from said wall in a plurality of successively lower stages in line with the burner, certain of said stages having downwardly inclined upper surfaces, and one of said inclined stages having upwardly diverging air inlet openings therein.

GEORGE C. ADAMS. 

